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UMLなんて今更必要ないと思っていた…
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UMLなんて今更必要ないと思っていた…
Scrum Fest Kanazawa 2024
Yatakeke
July 20, 2024
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Transcript
UMLͳΜͯ ࠓߋॻ͘ඞཁͳ͍ͱࢥ͍ͬͯͨ… Scrum Fest Kanazawa 2024 ΫϦΤʔγϣϯϥΠϯɹాਐ೭հ 1
ࣗݾհ { ँࡑ: “جௐߨԋͷԻτϥϒϧͷݪҼࢲͰ͢ɻਃ͠༁͋Γ·ͤΜͰͨ͠ɻ”, ໊લ: {໊: ాɹਐ೭հ, ϩʔϚࣈ: Yata Shinnosuke,
X: @yatakeke”}, ॅॴ: [“ࡾՏ”, “ࡳຈ”, “ߔͷޱ”, “ֶܳେֶ”, “ࡾՏ”, ”ྲྀࢁ”], ձࣾ: “ΫϦΤʔγϣϯϥΠϯגࣜձࣾ”, ৬ۀ: [“σʔλαΠΤϯςΟετ”, “ΞϓϦέʔγϣϯΤϯδχΞ”], ݴޠ: {Python: “8”, JavaScript: “3”, Java: “2”}, ڵຯ: [“ϖΞɾϞϒϓϩ”, “ϦϑΝΫλϦϯά”, “ΦϒδΣΫτࢦ”, “ܶஂCL”], ෆ҆: “ΦϒδΣΫτࢦք۾ͷਓͨͪɺා͍͔ΒԌ্͠ͳ͍͔ͳ…” } 2
νΣοΫΠϯ 3 ※ϗςϧͷνΣοΫΠϯͰ͋Γ·ͤΜ UnsplashͷMar Ko͕ࡱӨͨࣸ͠ਅ
Q1. UMLΛ͍ͬͯ·͔͢ʁ 1. ଘࡏ͍ͬͯΔ͚Ͳ΄ͱΜͲͬͨ͜ͱͳ͍ 2. աڈʹͬͨ͜ͱ͕͋Δ͚Ͳɺࠓ͍ͬͯͳ͍ 3. ΓΓ࣮ۀͰ͍ͬͯΔ 4
Q2. Ͳ͏ͬͯઃܭ͍ͯ͠·͔͢ʁ 1. ࣮͠ͳ͕ΒઃܭΛߟ͑Δ 2. ॳख࣮ʂԾ࣮Λͨ͠Β࠶ઃܭ࣮ͯ͢͠Δ 3. ιʔείʔυΛݟͳ͕ΒɺϝϞͱ͔ʹॻ͖ग़͢ 4. UMLͱ͔ΫϥεਤΛॻ͍ͯϞσϦϯά͍ͯ͠Δ
5. ্هҎ֎ͷԿ͔ 5
͜ͷηογϣϯʹ͍ͭͯ λʔήοτͱΞτΧϜ • ීஈɺ։ൃͰUMLΛ͍ͬͯͳ͍ਓ͕UMLΛॻ͖࢝ΊΔɻ • ීஈɺ࣮͠ͳ͕Βઃܭ͍ͯͨ͠ਓ͕ϞσϦϯάͷੈքҰา౿Έͩ͢ɻ ͞ͳ͍͜ͱ • ͋͘·ͰࣗͷܦݧஊͳͷͰɺ٬؍తࣄ࣮ͱֶज़తͳݟͰͳ͍ •
UMLͱݴͬͯɺجຊతʹclass diagramͷ͔͠͠·ͤΜ 6
ΞδΣϯμ • νΣοΫΠϯ • Ҏલ·ͰͷUMLͷΠϝʔδͱࣗͷ࣮ελΠϧ • UMLΛॻ͖࢝ΊΔ͖͔͚ͬ • UMLͱϞσϦϯάͷੈքΛ౿ΈೖΕΔ •
ͬͯΈͯΘ͔ͬͨ͜ͱ • νΣοΫΞτ 7
Ҏલ·ͰͷUMLͷΠϝʔδͱ ࣗͷ։ൃελΠϧ 8
UML͍ͬͯ·͔͢ʁˠ Ҏલ1Ͱͨ͠ ଘࡏ͍ͬͯΔ͚Ͳ΄΅ͬͨ͜ͱ͕ͳ͔ͬͨ • ϦϦʔεલೲલͳͲͷ۠ΓͰॻ͚͘Ͳ݁ہಡ·Εͳ͍ҹ • ҹͷछྨʢू/Ҡৡ/ܧঝʣͱ͔ه๏͕֮͑ΒΕͳ͍ • Ұ͚ͩɺGoogle Drive
ͷdraw.ioΛͬͨ͜ͱ͋Δ͕… • ϖΞϞϒϓϩͰ࣮͠ͳ͕Βઃܭ͍ͯ͠ΔͷͰඞཁੑΛײ͡ͳ͍ 9
Ͳ͏ͬͯઃܭʁˠ2ϝϞॻ͖+࣮த৺Ͱઃܭ ͕ࣗ։ൃ͢Δ࣌ͷ͓͓·͔ͳྲྀΕ(TDDʹ͍ۙ) 1. ৽͘͠Ճ͍༷ͨ͠Λཧղ͢Δ 2. ඞཁͳΫϥεΛ໊લఔͰચ͍ग़͠ʢMiroϑΝΠϧʹॻ͘ʣ 3. צͱܦݧͰϢχοτςετΛॻ͘ 4. ࣮͠ͳ͕ΒઃܭΛߟ͑ͯɺϦϑΝΫλϦϯάςΫΛۦ͍ͯ͘͠
10
ͳͥ͜ͷελΠϧʁ • ص্ͷٞͰઃܭ͢ΔΑΓίʔυΛॻ͖ͳ͕Βઃܭ͍ͯͬͨ͠ํ͕ ໌֬Ͱۭதઓগͳͯ͘ɺ݁Ռతʹૣ͍ͱߟ͍͔͑ͯͨΒ • ϦϑΝΫλϦϯάຊͷςΫχοΫΛਖ਼࣮͘͠ફ͍ͯ͠Ε҆શʹมߋ ͠ͳ͕ΒઃܭΛҭ͍͚ͯͯΔͱߟ͍͔͑ͯͨΒ • IDEΛͬͨ։ൃͱίʔσΟϯάʹ׳Ε͍ͯΔͨΊɺਤΛॻ͘ΑΓ ίʔσΟϯάͪ͠Όͬͨํ͕ૣ͍ͱߟ͍͔͑ͯͨΒ
11
ͨͩ͠ɺͨ·ʹى͜Δ͜ͱ • Ϋϥε͕૿͑ͯ͘ΔͱɺίʔυΛॻ͖ͳ͕Βઃܭ͢Δ࣌ʹ ʮ͋ͷΫϥεͲΜͳҾ͚ͩͬʁʯΈ͍ͨͳखΓ͕૿͑Δ • ϦϑΝΫλϦϯάʹཔΓ͍͗ͯ͢Δ͕ނʹɺͲ͜·ͰΔ͔ʹΑͬͯ ઃܭͷ࣭͕มΘͬͯ͘ΔͷͰ fi ndAndDoAnotherΈ͍ͨͳࡶͳϝιου͕ ੜ·Ε͕ͪɻ
12
UMLΛॻ͖࢝Ί͖͔͚ͨͬ 13
͖͔͚ͬ̎ͭͷࣾ֎Πϕϯτ ΦϒδΣΫτࢦΧϯϑΝϨϯε ʢҎԼɺOOCʣ ΦϒδΣΫτࢦͷ͜͜Ζ ಡॻձ 14
ΦϒδΣΫτࢦͷ͜͜Ζ, ΞϥϯɾγϟϩΣΠ ୈ2ষ UML౷ҰϞσϦϯάݴޠ, P39 “UMLʹɺઃܭΛ࿅Γ্͛Δͱͱ ʹɺίϛϡχέʔγϣϯΛԁʹ͢Δ ͱ͍͏త͕͋Γ·͢ɻਤͷʮਖ਼͠ ͍ʯඳ͖ํʹ͍ͭͯɺ͋·Γؾʹ͠ ͳͯ͘ߏ͍·ͤΜɻ”
15 จ๏͋·Γؾʹ͠ͳͯ͘Α͍
ΦϒδΣΫτࢦͷ͜͜ΖΛಡΜͩ͜ͱͰ จ๏ͬͯͦΕ΄Ͳॏཁ͡Όͳ͍ 16 ϓϩάϥϜͱҧͬͯΤϥʔ͕ग़ΔΘ͚Ͱͳ͍͠ͳ͋
ΦϒδΣΫτࢦΧϯϑΝϨϯεͰͷֶͼ ࣗͷཱͪҐஔ͕·ͩ·ͩͰ͋Δ͜ͱʹؾͮ͘ɻϞσϦϯάͰදهΛ౷ Ұ͍ͨ͠ͷͰ͋ΕUML͕ແɻͨͩ͠ɺࡉ͔͍ه๏ؾʹ͠ͳ͍ 17 ΦϒδΣΫτࢦͷϦɾΦϦΤϯςʔγϣϯ 3ͱ4ͷؒ 1ͱ2ͷؒ
UMLΛॻ͖࢝Ί͖͔͚ͨͬ UMLΛਖ਼͘͠ॻ͘͜ͱ << ϞσϦϯάΛ͢Δ ʹ͖͚ͮͨ 18
UMLͱϞσϦϯάͷ ੈքΛ౿ΈೖΕΔ 19
ϞσϦϯάͷ࿅शΛ࢝ΊͯΈͨ ৗੜ׆ʹ͋ΔͷΛϞσϦϯάͯ͠ΈΔͱ࿅शʹͳΔͱ͍͏Λฉ͍ ͯɺษڧձͷҰͱͯͬͯ͠Έͨ ͬͨ͜ͱɺίʔσΟϯάͤͣʹUMLͰΫϥεਤΛॻ͚ͩ͘ 20 ࣗಈվࡳػ ΤΞίϯ Πϕϯτϒʔε
ஏ͔͍͚ͣ͠Ͳ࿅शͷՌͷҰ෦Λެ։ʂ 21 OOCͷεϙϯαʔϒʔεͷϞσϦϯά • ࢀՃऀશһελϯϓΧʔυ͕ΒΕΔ • ϒʔεΛ๚ΕΔͱελϯϓ͕Β͑Δ • ΦϑΟγϟϧϒʔεͱεϙϯαʔϒʔε͕͋Δ •
ελϯϓ͕6ݸஷ·Δ͝ͱʹܠΨνϟ 3݄࣌ͳͷͰࠓͳΒͬͱ্ख͘… X͔Βऔಘ͕ͨ͠ɺͲͳ͔ͨͷࣸਅ͔͕Θ͔Βͳ͘ͳΓ·ͨ͠ɻ͢Έ·ͤΜ
ϞσϧΛඳ͍ͨ͜ͱͰ࣮Πϝʔδ͕มΘͬͨ 22 ϞσϦϯά͔ΒಘΒΕͨؾ͖ͮ • ΫϥεͰͳͯ͘ɺ;Δ·͍ʹର͢ΔϢχοτς ετΛ͔͜͜Βॻ͜͏ͱ͍͏ࣗ৴͕࣋ͯͨ ɹˠ εϙϯαʔϒʔεʹߦ͘ͱελϯϓ͕Β͑Δ • ׂͷҠৡ͕Ͱ͖͍ͯͦ͏ͳײ͡
ɹˠ ελϯϓΧʔυͷ ɹɹɾελϯϓΛԡͤΔ͔ ɹɹɾΨνϟ͕ճͤΔ͔ • ֓೦͔͠ߟ͑ΒΕͳ͍ͷͰ໋໊͕͍ͭΑΓγϯ ϓϧʹͳͬͨ ϞσϦϯάͤͣʹ࣮ͨ͠Βҧ͏݁ՌʹͳΓͦ͏
ͬͯΈͯΘ͔ͬͨ͜ͱ 23
ΦϒδΣΫτࢦͷ͜͜Ζ, ΞϥϯɾγϟϩΣΠ ୈ8ষ ࢹΛ͛Δ, P105 “ΦϒδΣΫτΛඋ࣮͑ͨମͰ͋Δͱఆٛ Ͱ͖·͢ɻ͜͏͍ͬͨʹΑͬͯɺΦϒδΣ ΫτͷৼΔ͍͕ఆٛ͞ΕΔͷͰ͢ɻ·ͨɺ ߹ʹΑͬͯɺΦϒδΣΫτಛఆͷৼΔ͍ Λอ࣮࣋ͨ͠ମͰ͋Δͱߟ͑ΒΕ·͢ɻ͜͏
͍ͬͨఆٛʹΑͬͯɺΦϒδΣΫτ͕Ͳ͏࣮ ͞ΕΔͷ͔Ͱͳ͘ɺΦϒδΣΫτ͕ԿΛ࣮ߦ ͢Δ͔ʹணͰ͖ΔΑ͏ʹͳΔΘ͚Ͱ͢ɻ” 24 ͦͦʮϞσϦϯά͢Δʯͱʁ
ϞσϦϯάͱઃܭͷҧ͍ 25 ͬͯΈͯײͨ͡ ※͋͘·Ͱݱ࣌ͷࣗͷ·ͱΊͨͷ
ઃܭ͢Δ ≠ ϞσϦϯά͢Δ • ʮઃܭ͢ΔʯͲ͏࣮͢Δ͔Λߟ͑ɺΓίʔυͰ͋Δ • ʮϞσϦϯά͢ΔʯɺͲ͏࣮ߦ͢Δ͔Λߟ͑ɺΓ૬ޓؔͷ ΞΠσΞͰ͋Δ 26 ൃදऀओ؍ͷݴޠԽͰ͕͢
ʮઃܭʯϞσϦϯάͬΆ͍Կ͔Λแ͍ͯ͠Δ͕ ʮϞσϦϯάʯʮઃܭʯʹஔ͖ΘΒͳ͍
ϞσϦϯάͨ͠Β͜͏ͳΔʢͣʣ 27 astah iPadͰઃܭɺϞσϦϯάͷҧ͍͚ͩʹணͯ͠
UMLΛॻ͘͜ͱͷҙࣝͷมԽ • ϦϦʔεલೲલͳͲͷ۠ΓͰॻ͚͘Ͳಡ·Εͳ͍ҹ ɹɹˠ ࣮ޙͰͳ͘ɺ࣮લʹϞσϦϯά͢ΔͨΊʹॻ͍ͨ΄͏͕Α͍ • ҹͷछྨʢू/Ҡৡ/ܧঝʣͱ͔ه๏͕֮͑ΒΕͳ͍ ɹɹˠ ϞσϦϯά͢Δ্Ͱ͋·ΓʹͳΒͳ͍ •
ҎલGoogle Drive ͷdraw.io͔ͬͨ͜͠ͱͳͯ͘… ɹɹˠ ࣗPlantUMLΛ͏ͷ͕͘͢͝ϑΟοτ͍ͯ͠Δɻastah iPadαΫαΫ͔͚Δ • ϖΞϞϒϓϩͰ࣮͠ͳ͕Βઃܭ͍ͯ͠ΔͷͰඞཁੑΛײ͡ͳ͍ ɹɹˠ ϞϒϓϩͰͰ͖ΔͷͰɺͬͯΈ͍ͨʂ 28
ͬͯΈ͔ͨΒΘ͔ͬͨ͜ͱ ͜Μͳ͔Μ͕͡ཧత͔ʂ 29 ͨΓલͰ͕͢ςετ࣮ʹؚ·Ε·͢
༨ஊɿ PlantUML͍͍͢ class TrainGate { +work() -enter(Ticket t) -enter(ElectricMoney e)
-open() -close() } TrainGate *-right- ICReader TrainGate *-left- TicketReader class TicketReader { +enter(Ticket t) +exit(ticket t) } TicketReader o-- Ticket abstract class Ticket { +getStartPlace() +getPrice() +isSeasonTicket() } Ticket <|-- PriceTicket: imp Ticket <|-- RideTicket: imp Ticket <|-- SeasonTicket: imp class PriceTicket { startPlace price +getStartPlace() +getPrice() +isSeasonTicket() } class RideTicket { startPlace endPlace +getStartPlace() +getPrice() +isSeasonTicket() } class SeasonTicket { startPlace endPlace +getStartPlace() +getPrice() +isSeasonTicket() } class ICReader { +enter(ElectricMoney m) +exit(ElectricMoney m) } Interface ElectricMoney { } ICReader o-- ElectricMoney • جຊతʹίʔυ͚ͩॻ͚Α͍ • ϩʔϧόοΫͰ͖Δ • ஔΛ͋·Γؾʹ͠ͳͯ͘Α͍ 30 ։ൃऀͳΒΉͣʂ
࣮Ͱཱ͍ͬͯΔ͜ͱ • ࣮·࣮ͩۀͰUML·ͰΛॻ͍͔ͯΒ࣮͢ΔɺͰ͖͍ͯͳ͍ • θϩ͔ΒઃܭΛߟ͑ΔΈ͍ͨͳ͜ͱ͕ͳ͔ͬͨͷͰ…(͜Ε͔Βػ ձ͕;͑Δ) • ͨͩɺUMLϞσϦϯάΛ࿅श͢Δ͜ͱͰɺ૬ޓ࡞༻ʹର͢Δҙ͕ࣝม Θͬͯঃʑʹ࣮͕มΘ͖ͬͯͨ(͜Ε·ͨͲ͔͜ͷػձͰ) 31
͜ͷηογϣϯʹ͍ͭͯ λʔήοτͱΞτΧϜ • ීஈɺ։ൃͰUMLΛ͍ͬͯͳ͍ਓ͕UMLΛॻ͖࢝ΊΔɻ • ීஈɺ࣮͠ͳ͕Βઃܭ͍ͯͨ͠ਓ͕ϞσϦϯάͷੈքҰา౿Έͩ͢ɻ ͞ͳ͍͜ͱ • ͋͘·ͰࣗͷܦݧஊͳͷͰɺ٬؍తࣄ࣮ͱֶज़తͳݟͰͳ͍ •
جຊతʹɺclass diagramͷ͔͠͠·ͤΜ 32
ͬͨ͜ͱ͕ͳ͍ਓͷϝοηʔδ • ཧղͰͳ͘ɺ࣮Λॿ͚ΔͨΊʹUMLΛॻ͘ • ਖ਼͍͠จ๏ͷUMLΛॻ͘ << ϞσϦϯάΛ͢Δ • ʢຊ࣮Ͱͬͨ΄͏͕͍͍͚ͲʣࣄҎ֎ͰUMLϞσϦϯά Λ࿅शͯ͠ΈΔ͚ͩͰ࣮ͷ෯͕͕ΔΑʂ
33
End 34
35 ຊୈ3൛
Ҿ༻TBD “σʔλՄࢹԽʮσʔλΛݟ͘͢ ͢ΔֆΛඳ͚ͩ͘ͷ࡞ۀʯͱࢥΘΕ ͕ͪͰ͕͢ɺ࣮ࡍʹͦ͜·Ͱͷॲ ཧมɺ͞Βʹશମతͳཧ ؚΊͯਖ਼͍͠ղऍҙࢥܾఆΛߦ͏ ͜ͱ͕ਅͷతͰ͔͢Βɺʢུʣ” 36 ՄࢹԽͷҙਤͱཧղˠߦಈʹܨ͛Δ ʮਤΛॻ͘ʯ㲈ʮσʔλՄࢹԽʯͱଊ͑Δͱ
·ͱΊ • ਖ਼͍͠จ๏ͷUMLΛॻ͘ << ϞσϦϯάΛ͢Δ • UML ͷclass diagramΛॻ͖ͳ͕Β࣮Λߟ͑Δ͚ͩͰ ࣗવͱϞσϦϯάʹͳ͍ͬͯ͘
• ʢຊ࣮ͰΓ͍͚ͨͲʣ࿅शͰԿݸ͔UMLϞσϦϯάͯ͠Έ Δ͚ͩͰߟ͑ํͷ෯͕͕ΔΑʂͥͻҰาΛʂ 37
ਤͱͳΜͷͨΊʹ͋Δͷ͔ʁ 38 ൃදऀओ؍
UML (class diagram) Λॻ͘͜ͱͷؾ͖ͮ • ̏࣍ݩʢΦϒδΣΫτ໊ɺϝιου໊ɺΫϥεͷؔੑʣʹযΛ ஔ͍ͯՄࢹԽ͞ΕΔͷͰϞσϦϯά͍͢͠ • PlantUML͘͢͝ॻ͖ͯ͘͢ɺߟ͑Δ͜ͱʹूதͰ͖Δ •
UMLͷจ๏ͷਖ਼͠͞ɺϞσϦϯά͢Δ্Ͱؔͳ͍ɻ ͕ࣗΘ͔͍ͬͯΕΑ͍ 39 ൃදऀओ؍
ΦϒδΣΫτࢦͷ͜͜Ζ • Certi fi ed Scrum Developer(CSD)ݚम Ͱ͓͢͢Ί͞Εͨ • σβΠϯύλʔϯͷཧղͱͱʹ
ΧϓηϧԽʹؔ͢Δଊ͑ํ͕มΘΔຊ • CSDݚमˠΦϒδΣΫτࢦͷ͜͜Ζ ͓͘͢͢͢͝Ίʂ 40